org.apache.activemq.artemis.core.replication

Class ReplicatedJournal

java.lang.Object

org.apache.activemq.artemis.core.replication.ReplicatedJournal

All Implemented Interfaces:

Journal, ActiveMQComponent

public class ReplicatedJournal
extends Object
implements Journal

Used by the JournalStorageManager to replicate journal calls.

This class wraps a ReplicationManager and the local Journal. Every call will be relayed to both instances.

See Also:

JournalStorageManager

Nested Class Summary

Nested classes/interfaces inherited from interface org.apache.activemq.artemis.core.journal.Journal

Journal.JournalState

Constructor Summary

Constructors

Constructor and Description
ReplicatedJournal(byte journalID, Journal localJournal, ReplicationManager replicationManager)

Method Summary

Modifier and Type	Method and Description
void	appendAddRecord(long id, byte recordType, byte[] record, boolean sync)
void	appendAddRecord(long id, byte recordType, EncodingSupport record, boolean sync)
void	appendAddRecord(long id, byte recordType, EncodingSupport record, boolean sync, IOCompletion completionCallback)
void	appendAddRecordTransactional(long txID, long id, byte recordType, byte[] record)
void	appendAddRecordTransactional(long txID, long id, byte recordType, EncodingSupport record)
void	appendCommitRecord(long txID, boolean sync)
void	appendCommitRecord(long txID, boolean sync, IOCompletion callback)
void	appendCommitRecord(long txID, boolean sync, IOCompletion callback, boolean lineUpContext)
void	appendDeleteRecord(long id, boolean sync)
void	appendDeleteRecord(long id, boolean sync, IOCompletion completionCallback)
void	appendDeleteRecordTransactional(long txID, long id)
void	appendDeleteRecordTransactional(long txID, long id, byte[] record)
void	appendDeleteRecordTransactional(long txID, long id, EncodingSupport record)
void	appendPrepareRecord(long txID, byte[] transactionData, boolean sync)
void	appendPrepareRecord(long txID, EncodingSupport transactionData, boolean sync) If the system crashed after a prepare was called, it should store information that is required to bring the transaction back to a state it could be committed.
void	appendPrepareRecord(long txID, EncodingSupport transactionData, boolean sync, IOCompletion callback)
void	appendRollbackRecord(long txID, boolean sync)
void	appendRollbackRecord(long txID, boolean sync, IOCompletion callback)
void	appendUpdateRecord(long id, byte recordType, byte[] record, boolean sync)
void	appendUpdateRecord(long id, byte recordType, EncodingSupport record, boolean sync)
void	appendUpdateRecord(long id, byte journalRecordType, EncodingSupport record, boolean sync, IOCompletion completionCallback)
void	appendUpdateRecordTransactional(long txID, long id, byte recordType, byte[] record)
void	appendUpdateRecordTransactional(long txID, long id, byte recordType, EncodingSupport record)
Map<Long,JournalFile>	createFilesForBackupSync(long[] fileIds) Reserves journal file IDs, creates the necessary files for synchronization, and places references to these (reserved for sync) files in the map.
void	flush() It will make sure there are no more pending operations on the Executors.
void	forceMoveNextFile() Force the usage of a new JournalFile.
int	getAlignment()
JournalFile[]	getDataFiles() Returns the JournalFiles in use.
SequentialFileFactory	getFileFactory()
int	getFileSize()
int	getNumberOfRecords()
int	getUserVersion()
boolean	isStarted()
void	lineUpContext(IOCompletion callback)
JournalLoadInformation	load(List<RecordInfo> committedRecords, List<PreparedTransactionInfo> preparedTransactions, TransactionFailureCallback transactionFailure)
JournalLoadInformation	load(LoaderCallback reloadManager)
JournalLoadInformation	loadInternalOnly() Load internal data structures and not expose any data.
JournalLoadInformation	loadSyncOnly(Journal.JournalState state) Load internal data structures, and remain waiting for synchronization to complete.
void	perfBlast(int pages)
void	replicationSyncFinished() Restarts file reclaim and compacting on the journal.
void	replicationSyncPreserveOldFiles() Stops any operation that may delete or modify old (stale) data.
void	runDirectJournalBlast()
void	scheduleCompactAndBlock(int timeout) This method will start compact using the compactorExecutor and block up to timeout seconds
void	start()
void	stop()
void	synchronizationLock() Write lock the Journal and write lock the compacting process.
void	synchronizationUnlock() Unlock the Journal and the compacting process.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Detail

ReplicatedJournal

public ReplicatedJournal(byte journalID,
                         Journal localJournal,
                         ReplicationManager replicationManager)

Method Detail

flush

public void flush()
           throws Exception

Description copied from interface: Journal

It will make sure there are no more pending operations on the Executors.

Specified by:

flush in interface Journal

Throws:

Exception

appendAddRecord

public void appendAddRecord(long id,
                            byte recordType,
                            byte[] record,
                            boolean sync)
                     throws Exception

Specified by:

appendAddRecord in interface Journal

Parameters:

id -

recordType -

record -

sync -

Throws:

Exception

See Also:

Journal.appendAddRecord(long, byte, byte[], boolean)

appendAddRecord

public void appendAddRecord(long id,
                            byte recordType,
                            EncodingSupport record,
                            boolean sync)
                     throws Exception

Specified by:

appendAddRecord in interface Journal

Throws:

Exception

appendAddRecord

public void appendAddRecord(long id,
                            byte recordType,
                            EncodingSupport record,
                            boolean sync,
                            IOCompletion completionCallback)
                     throws Exception

Specified by:

appendAddRecord in interface Journal

Parameters:

id -

recordType -

record -

sync -

Throws:

Exception

See Also:

Journal.appendAddRecord(long, byte, org.apache.activemq.artemis.core.journal.EncodingSupport, boolean)

appendAddRecordTransactional

public void appendAddRecordTransactional(long txID,
                                         long id,
                                         byte recordType,
                                         byte[] record)
                                  throws Exception

Specified by:

appendAddRecordTransactional in interface Journal

Parameters:

txID -

id -

recordType -

record -

Throws:

Exception

See Also:

Journal.appendAddRecordTransactional(long, long, byte, byte[])

appendAddRecordTransactional

public void appendAddRecordTransactional(long txID,
                                         long id,
                                         byte recordType,
                                         EncodingSupport record)
                                  throws Exception

Specified by:

appendAddRecordTransactional in interface Journal

Parameters:

txID -

id -

recordType -

record -

Throws:

Exception

See Also:

Journal.appendAddRecordTransactional(long, long, byte, org.apache.activemq.artemis.core.journal.EncodingSupport)

appendCommitRecord

public void appendCommitRecord(long txID,
                               boolean sync)
                        throws Exception

Specified by:

appendCommitRecord in interface Journal

Parameters:

txID -

sync -

Throws:

Exception

See Also:

Journal.appendCommitRecord(long, boolean)

appendCommitRecord

public void appendCommitRecord(long txID,
                               boolean sync,
                               IOCompletion callback)
                        throws Exception

Specified by:

appendCommitRecord in interface Journal

Throws:

Exception

appendCommitRecord

public void appendCommitRecord(long txID,
                               boolean sync,
                               IOCompletion callback,
                               boolean lineUpContext)
                        throws Exception

Specified by:

appendCommitRecord in interface Journal

lineUpContext - if appendCommitRecord should call a storeLineUp. This is because the caller may have already taken into account

Throws:

Exception

appendDeleteRecord

public void appendDeleteRecord(long id,
                               boolean sync)
                        throws Exception

Specified by:

appendDeleteRecord in interface Journal

Parameters:

id -

sync -

Throws:

Exception

See Also:

Journal.appendDeleteRecord(long, boolean)

appendDeleteRecord

public void appendDeleteRecord(long id,
                               boolean sync,
                               IOCompletion completionCallback)
                        throws Exception

Specified by:

appendDeleteRecord in interface Journal

Throws:

Exception

appendDeleteRecordTransactional

public void appendDeleteRecordTransactional(long txID,
                                            long id,
                                            byte[] record)
                                     throws Exception

Specified by:

appendDeleteRecordTransactional in interface Journal

Parameters:

txID -

id -

record -

Throws:

Exception

See Also:

Journal.appendDeleteRecordTransactional(long, long, byte[])

appendDeleteRecordTransactional

public void appendDeleteRecordTransactional(long txID,
                                            long id,
                                            EncodingSupport record)
                                     throws Exception

Specified by:

appendDeleteRecordTransactional in interface Journal

Parameters:

txID -

id -

record -

Throws:

Exception

See Also:

Journal.appendDeleteRecordTransactional(long, long, org.apache.activemq.artemis.core.journal.EncodingSupport)

appendDeleteRecordTransactional

public void appendDeleteRecordTransactional(long txID,
                                            long id)
                                     throws Exception

Specified by:

appendDeleteRecordTransactional in interface Journal

Parameters:

txID -

id -

Throws:

Exception

See Also:

Journal.appendDeleteRecordTransactional(long, long)

appendPrepareRecord

public void appendPrepareRecord(long txID,
                                byte[] transactionData,
                                boolean sync)
                         throws Exception

Specified by:

appendPrepareRecord in interface Journal

Parameters:

txID -

transactionData -

sync -

Throws:

Exception

See Also:

Journal.appendPrepareRecord(long, byte[], boolean)

appendPrepareRecord

public void appendPrepareRecord(long txID,
                                EncodingSupport transactionData,
                                boolean sync)
                         throws Exception

Description copied from interface: Journal

If the system crashed after a prepare was called, it should store information that is required to bring the transaction back to a state it could be committed.

transactionData allows you to store any other supporting user-data related to the transaction

Specified by:

appendPrepareRecord in interface Journal

Parameters:

txID -

transactionData -

sync -

Throws:

Exception

See Also:

Journal.appendPrepareRecord(long, org.apache.activemq.artemis.core.journal.EncodingSupport, boolean)

appendPrepareRecord

public void appendPrepareRecord(long txID,
                                EncodingSupport transactionData,
                                boolean sync,
                                IOCompletion callback)
                         throws Exception

Specified by:

appendPrepareRecord in interface Journal

Throws:

Exception

appendRollbackRecord

public void appendRollbackRecord(long txID,
                                 boolean sync)
                          throws Exception

Specified by:

appendRollbackRecord in interface Journal

Parameters:

txID -

sync -

Throws:

Exception

See Also:

Journal.appendRollbackRecord(long, boolean)

appendRollbackRecord

public void appendRollbackRecord(long txID,
                                 boolean sync,
                                 IOCompletion callback)
                          throws Exception

Specified by:

appendRollbackRecord in interface Journal

Throws:

Exception

appendUpdateRecord

public void appendUpdateRecord(long id,
                               byte recordType,
                               byte[] record,
                               boolean sync)
                        throws Exception

Specified by:

appendUpdateRecord in interface Journal

Parameters:

id -

recordType -

record -

sync -

Throws:

Exception

See Also:

Journal.appendUpdateRecord(long, byte, byte[], boolean)

appendUpdateRecord

public void appendUpdateRecord(long id,
                               byte recordType,
                               EncodingSupport record,
                               boolean sync)
                        throws Exception

Specified by:

appendUpdateRecord in interface Journal

Parameters:

id -

recordType -

record -

sync -

Throws:

Exception

See Also:

Journal.appendUpdateRecord(long, byte, org.apache.activemq.artemis.core.journal.EncodingSupport, boolean)

appendUpdateRecord

public void appendUpdateRecord(long id,
                               byte journalRecordType,
                               EncodingSupport record,
                               boolean sync,
                               IOCompletion completionCallback)
                        throws Exception

Specified by:

appendUpdateRecord in interface Journal

Throws:

Exception

appendUpdateRecordTransactional

public void appendUpdateRecordTransactional(long txID,
                                            long id,
                                            byte recordType,
                                            byte[] record)
                                     throws Exception

Specified by:

appendUpdateRecordTransactional in interface Journal

Parameters:

txID -

id -

recordType -

record -

Throws:

Exception

See Also:

Journal.appendUpdateRecordTransactional(long, long, byte, byte[])

appendUpdateRecordTransactional

public void appendUpdateRecordTransactional(long txID,
                                            long id,
                                            byte recordType,
                                            EncodingSupport record)
                                     throws Exception

Specified by:

appendUpdateRecordTransactional in interface Journal

Parameters:

txID -

id -

recordType -

record -

Throws:

Exception

See Also:

Journal.appendUpdateRecordTransactional(long, long, byte, org.apache.activemq.artemis.core.journal.EncodingSupport)

load

public JournalLoadInformation load(List<RecordInfo> committedRecords,
                                   List<PreparedTransactionInfo> preparedTransactions,
                                   TransactionFailureCallback transactionFailure)
                            throws Exception

Specified by:

load in interface Journal

Parameters:

committedRecords -

preparedTransactions -

transactionFailure -

Throws:

Exception

See Also:

Journal.load(java.util.List, java.util.List, org.apache.activemq.artemis.core.journal.TransactionFailureCallback)

load

public JournalLoadInformation load(LoaderCallback reloadManager)
                            throws Exception

Specified by:

load in interface Journal

Parameters:

reloadManager -

Throws:

Exception

See Also:

Journal.load(org.apache.activemq.artemis.core.journal.LoaderCallback)

perfBlast

public void perfBlast(int pages)

Specified by:

perfBlast in interface Journal

Parameters:

pages -

See Also:

Journal.perfBlast(int)

start

public void start()
           throws Exception

Specified by:

start in interface ActiveMQComponent

Throws:

Exception

See Also:

ActiveMQComponent.start()

stop

public void stop()
          throws Exception

Specified by:

stop in interface ActiveMQComponent

Throws:

Exception

See Also:

ActiveMQComponent.stop()

getAlignment

public int getAlignment()
                 throws Exception

Specified by:

getAlignment in interface Journal

Throws:

Exception

isStarted

public boolean isStarted()

Specified by:

isStarted in interface ActiveMQComponent

loadInternalOnly

public JournalLoadInformation loadInternalOnly()
                                        throws Exception

Description copied from interface: Journal

Load internal data structures and not expose any data. This is only useful if you're using the journal but not interested on the current data. Useful in situations where the journal is being replicated, copied... etc.

Specified by:

loadInternalOnly in interface Journal

Throws:

Exception

getNumberOfRecords

public int getNumberOfRecords()

Specified by:

getNumberOfRecords in interface Journal

runDirectJournalBlast

public void runDirectJournalBlast()
                           throws Exception

Specified by:

runDirectJournalBlast in interface Journal

Throws:

Exception

getUserVersion

public int getUserVersion()

Specified by:

getUserVersion in interface Journal

lineUpContext

public void lineUpContext(IOCompletion callback)

Specified by:

lineUpContext in interface Journal

loadSyncOnly

public JournalLoadInformation loadSyncOnly(Journal.JournalState state)
                                    throws Exception

Description copied from interface: Journal

Load internal data structures, and remain waiting for synchronization to complete.

Specified by:

loadSyncOnly in interface Journal

Parameters:

state - the current state of the journal, this parameter ensures consistency.

Throws:

Exception

createFilesForBackupSync

public Map<Long,JournalFile> createFilesForBackupSync(long[] fileIds)
                                               throws Exception

Description copied from interface: Journal

Reserves journal file IDs, creates the necessary files for synchronization, and places references to these (reserved for sync) files in the map.

During the synchronization between a live server and backup, we reserve in the backup the journal file IDs used in the live server. This call also makes sure the files are created empty without any kind of headers added.

Specified by:

createFilesForBackupSync in interface Journal

Parameters:

fileIds - IDs to reserve for synchronization

Returns:

map to be filled with id and journal file pairs for synchronization.

Throws:

Exception

synchronizationLock

public void synchronizationLock()

Description copied from interface: Journal

Write lock the Journal and write lock the compacting process. Necessary only during replication for backup synchronization.

Specified by:

synchronizationLock in interface Journal

synchronizationUnlock

public void synchronizationUnlock()

Description copied from interface: Journal

Unlock the Journal and the compacting process.

Specified by:

synchronizationUnlock in interface Journal

See Also:

Journal.synchronizationLock()

forceMoveNextFile

public void forceMoveNextFile()

Description copied from interface: Journal

Force the usage of a new JournalFile.

Specified by:

forceMoveNextFile in interface Journal

getDataFiles

public JournalFile[] getDataFiles()

Description copied from interface: Journal

Returns the JournalFiles in use.

Specified by:

getDataFiles in interface Journal

Returns:

array with all JournalFiles in use

getFileFactory

public SequentialFileFactory getFileFactory()

Specified by:

getFileFactory in interface Journal

getFileSize

public int getFileSize()

Specified by:

getFileSize in interface Journal

scheduleCompactAndBlock

public void scheduleCompactAndBlock(int timeout)
                             throws Exception

Description copied from interface: Journal

This method will start compact using the compactorExecutor and block up to timeout seconds

Specified by:

scheduleCompactAndBlock in interface Journal

Parameters:

timeout - the timeout in seconds or block forever if <= 0

Throws:

Exception

replicationSyncPreserveOldFiles

public void replicationSyncPreserveOldFiles()

Description copied from interface: Journal

Stops any operation that may delete or modify old (stale) data.

Meant to be used during synchronization of data between a live server and its replicating (remote) backup. Old files must not be compacted or deleted during synchronization.

Specified by:

replicationSyncPreserveOldFiles in interface Journal

replicationSyncFinished

public void replicationSyncFinished()

Description copied from interface: Journal

Restarts file reclaim and compacting on the journal.

Meant to be used to revert the effect of Journal.replicationSyncPreserveOldFiles(). it should only be called once the synchronization of the backup and live servers is completed.

Specified by:

replicationSyncFinished in interface Journal